Technical Booklet G Resistance to the Passage of Sound·Page 40·2.59
Party Wall Thermal Bypass and Building Regulations Compliance
Air movement in cavity masonry separating walls can cause heat loss (party wall thermal bypass); measures for Part F compliance such as cavity filling should not conflict with Part G sound requirements.
Air movement in a cavity masonry separating wall can be a source of significant heat loss. This is known as the party wall thermal bypass and is addressed by Part F of the Building Regulations. Any measures taken for compliance with Part F, such as filling and sealing of the cavity, should not conflict with the requirements of Part G.
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